| 钯镍合金薄膜电极上甲酸电氧化-去合金化效应 |
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| 引用本文： | 王超,史菲菲,王金意,张涵轩,蔡文斌.钯镍合金薄膜电极上甲酸电氧化-去合金化效应[J].电化学,2009,15(4):377. |
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| 作者姓名： | 王超 史菲菲 王金意 张涵轩 蔡文斌 |
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| 作者单位： | 复旦大学上海市分子催化和功能材料重点实验室化学系; |
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| 基金项目： | 国家自然科学基金(20833005,20873031); 上海市科委(08JC1402000)资助 |
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| 摘 要： | 在含PdC l2、N iSO4和乙二胺的弱碱性镀液中,于Au电极上用恒电位电沉积Pd-N i合金薄膜,后经酸性溶液中循环伏安法处理,得到去合金化的Pd-N i电极.扫描电镜以及电化学测试表明,去合金化处理使Pd-N i镀膜表面微观粗糙度增加,比表面积增大;ICP-AES和XPS分析证实合金表层N i的优先溶出造成Pd的富集.去合金化处理的Pd-N i电极电催化氧化甲酸的活性明显优于未处理的Pd-N i电极和多晶Pd电极.
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| 关 键 词： | 钯镍合金 去合金化 甲酸 电催化 |
| 收稿时间： | 2009-11-28 |
Electrooxidation of Formic Acid on Pd-Ni Alloy Film Electrode-The Effect of Dealloying |
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| WANG Chao,SHI Fei-fei,WANG Jin-yi,ZHANG Han-xuan,CAI Wen-bin.Electrooxidation of Formic Acid on Pd-Ni Alloy Film Electrode-The Effect of Dealloying[J].Electrochemistry,2009,15(4):377. |
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| Authors: | WANG Chao SHI Fei-fei WANG Jin-yi ZHANG Han-xuan CAI Wen-bin |
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| Institution: | WANG Chao,SHI Fei-fei,WANG Jin-yi,ZHANG Han-xuan,CAI Wen-bin*(Shanghai Key Laboratory for Molecular Catalysis , Innovative Materials,Department of Chemistry,Fudan University,Shanghai 200433,China) |
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| Abstract: | A Pd-Ni alloy film was electrodeposited on Au disc electrode at a constant potential from a weakly basic bath containing PdCl2,NiSO4 and ethylenediamine.The as-deposited film was then subjected to potential cycling in a perchloric acid solution for surface dealloying treatment.The dealloyed Pd-Ni film electrode was examined for the electrocatalytic oxidation of formic acid,and compared with the as-deposited one as well as a Pd film electrode.The FE-SEM and electrochemical measurements on the Pd-Ni films rev... |
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| Keywords: | Pd-Ni alloy dealloyment formic acid electrocatalysis |
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